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Can someone please help me out with this question, I will appreciate it

Can someone please help me out with this question, I will appreciate it-example-1
User Ankhaa
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2 Answers

4 votes
It's an observational study. Hope this helps :D
User DARKGuy
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4 votes
a experiment because he has a question to test and he can use observations and everything like that to test a question
User IssamLaradji
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